Struts2拦截器属性excludeMethods、includeMethods配置无效的原因

Struts2拦截器属性excludeMethods、includeMethods配置无效的原因:

拦截器如果通过实现Interceptor接口生成的话，属性excludeMethods、includeMethods配置无效。拦截器如果通过继承MethodFilterInterceptor类的话，属性excludeMethods、includeMethods配置有效。

public class UserLoginInterceptor extends MethodFilterInterceptor implements Interceptor{
	private static final long serialVersionUID = 1L;
	@Override
	protected String doIntercept(ActionInvocation invocation) throws Exception {
		return "";
	}
}